Finding the Fourth Proportional to 78,628.42, 117,920.70 and 26,041.99
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Solution
The fourth proportional to 78,628.42, 117,920.70 and 26,041.99 is: 39,055.72
Step by Step Solution
- Step 1: Write the proportion equation
78,628.42 : 117,920.70 = 26,041.99 : x - Step 2: Convert to fraction form
78,628.42/117,920.70 = 26,041.99/x - Step 3: Cross multiply
78,628.42x = 117,920.70 × 26,041.99 - Step 4: Simplify right side
78,628.42x = 3,070,889,690.19 - Step 5: Solve for x
x = 3,070,889,690.19/78,628.42 - Step 6: Final answer
x = 39,055.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.